Most Popular

Whey to Grow

When it comes to muscle growth, one protein source stands out. "Whey protein offers the biggest benefit," Phillips says. You digest it more quickly than other types of protein, so it hits your muscles faster. Whey protein also has the highest concentration of the amino acid leucine, giving it more muscle-building power than anything in the supermarket. Phillips recommends 25 grams of whey protein postworkout. There's no harm in having more, but there's no proven benefit, either.